Title:
インクを除去する方法
Document Type and Number:
Japanese Patent JP5117477
Kind Code:
B2
Abstract:
A method of deinking printed paper comprises pulping the paper to form an aqueous slurry, adding a deinking additive to the paper, and removing detached ink by flotation, wherein the additive comprises an organo-modified siloxane comprising units of the formula: [R1aZbSiO(4-a-b)/2]n in which each R1 is independently selected from a hydrogen atom, an alkyl, aryl, alkenyl, aralkyl, alkaryl, alkoxy, alkanoyloxy, hydroxyl, ester or ether group; each Z is independently selected from an alkyl group substituted with an amine, amide, carboxyl, ester, or epoxy group, or a group -R2-(OCPH2P)q (OCrH2r)s-R3; n is an integer greater than 1; a and b are independently 0, 1, 2 or 3; R2 is an alkylene group or a direct bond; R3 is a group as defined for R1 or Z above; p and r are independently an integer from 1 to 6; q and s are independently 0 or an integer such that 1<=q+s>=400; and wherein each molecule of the organo-modified siloxane contains at least one group Z.
Inventors:
Bernese, Nehressen
North Fleet, Christina
North Fleet, Christina
Application Number:
JP2009264247A
Publication Date:
January 16, 2013
Filing Date:
November 19, 2009
Export Citation:
Assignee:
DOW CORNING CORPORATION
NOPCO PAPER TECHNOLOGY HOLDING AS
NOPCO PAPER TECHNOLOGY HOLDING AS
International Classes:
D21C5/02; D21H17/13; D21H17/59
Domestic Patent References:
| JP4478019B2 | ||||
| JP6192985A | ||||
| JP60246887A | ||||
| JP2210082A | ||||
| JP9324382A | ||||
| JP9176978A | ||||
| JP2001507408A |
Foreign References:
| US5248388 | ||||
| US5228369 |
Attorney, Agent or Firm:
Hironobu Onda
Makoto Onda
Atsushi Honda
Makoto Onda
Atsushi Honda